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Four-road annular intersection design method based on single entrance release

A design method and transportation technology, applied in the direction of road vehicle traffic control system, traffic control system, instrument, etc., can solve the problem of large delay per vehicle

Inactive Publication Date: 2013-05-22
WUHAN UNIV OF TECH
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Problems solved by technology

The comparison and analysis of two commonly used roundabout signal control design methods, "Multiple Entrance Clearance Collaborative Ring Control" and "Single Entrance Clearance Control", is due to the fact that in the conventional single entrance clearance method Coordination was not carried out, resulting in a relatively large average vehicle delay

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  • Four-road annular intersection design method based on single entrance release
  • Four-road annular intersection design method based on single entrance release
  • Four-road annular intersection design method based on single entrance release

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Embodiment Construction

[0057] In the specific implementation, it is first necessary to arrange the lanes, stop lines and signal lights. Intersecting roads must be two-way 4-lane and above. When implementing this plan, the range of 50-100 meters near the intersection will be widened into two-way 6-lane, and right-turning vehicles will be provided with special ramps for right-turning. For the through lane and the entrance lane of the left-turn lane at the intersection, a stop line shall be set behind the pedestrian crossing, and a signal light shall be set up at a visible position in front. Signal lights for controlling the parking area are set at the visible position of the roundabout.

[0058] Next, determine the signal phase scheme. The signal phase scheme should be determined according to the composition of different traffic flow at the intersection and the size of pedestrian and non-motor vehicle crossing flow. When there is a lot of pedestrian crossing traffic and intersecting road traffic, co...

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Abstract

The invention provides a four-road annular intersection design method based on single entrance release. In terms of adjacent entrances and annular road trapezoid car storage area, an original single entrance release signal cycle model is modified, a modified four-road annular intersection single entrance release signal control mode is provided, signal phase of the control mode is coordinated, steps for phase coordination time difference calculation is elaborated, and preliminary discussion of application conditions of the control mode is provided one the basis of intersection traffic capacity and delay analysis. The traffic capacity and delay analysis results show that by the control mode, intersection traffic capacity is increased by more than 20%, and delay is reduced by more than 30%.

Description

technical field [0001] The invention relates to a traffic design method for improving traffic capacity of a roundabout, in particular to a four-way roundabout design method based on single-way clearance. It belongs to the field of traffic design and signal control. Background technique [0002] The bottleneck of urban road traffic is mainly concentrated at intersections, which are the throats of urban road traffic and the main factor causing delays in driving. In the 1970s and 1980s, many roundabouts (referred to as roundabouts) were built in many cities in my country, but the original design capacity of the roundabouts could not meet the growing demand, and increasingly serious problems such as congestion and congestion appeared. For the problem of insufficient traffic capacity in the roundabout design, in the past, the method of demolishing the roundabout and rebuilding it into a general level crossing plus signal control was usually adopted. However, this method is not ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/081
Inventor 徐良杰喻彪左俊中
Owner WUHAN UNIV OF TECH
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